电力系统运行时,不仅要满足有功电力的平衡,还要满足无功电力的平衡。县级小电网除配置一定数量的电容器来满足无功电力的平衡外,还可用并网的小水电机组作无功补偿。用分散的小水电机组发无功电力,不仅有利于 Power system operation, not only to meet the balance of active power, but also to meet the balance of reactive power. In addition to a small number of county-level power grid configuration of capacitors to meet the balance of reactive power, but also with small hydropower units for reactive power compensation. Using distributed small hydropower units to send reactive power is not only beneficial